Rifle Data Book

8/6/2019 Rifle Data Book

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The Rifle Data Book

To track the performance of your rifle and ammunition, and to discover tiny variances between

"book data" and your own combo of rifle-scope-ammo, a precision rifleman uses a Rifle Data

Book -- which we are simplifying by giving you a free page that you can duplicate and bind into

your own book (see below).

Every time you shoot -- whether zeroing or practice firing -- log in each shot, continually

updating and reassessing your performance with that rifle. Indeed, you should have a separate

Data Book for each rifle you own.

How many rounds have gone through your barrel? Check the Data Book. How is your bullet's

trajectory affected when the temperature drops 40 degrees? Check the Data Book. Is this lot of

ammunition firing the same as the previous lot? Check the Data Book. Cumulatively, this book

becomes a history of your rifle, and a diagnostic tool to analyze your shooting performance,

enabling you to trace your growth and find fundamental problems that may require training

emphasis.

Instructions for Logging Data

The Data Book page is designed to log ten shots -- the maximum you should fire into a single

target. Ideally, a precision shooter plans each shot so it's focused, analyzed and carefully

recorded. Not only does this help you develop patience and attentiveness to each shot, but it's a

firing rate that prevents your barrel from heating, which could shift your bullet's impact point.





shooting, a corrected setting. WINDAGE, too, has spaces for both an initial and a corrected

setting.

And WHEN YOU START FIRING there's a miniature bull's eye to record SPOTTERS (Spotting

Rounds) if choose to fire them. Save the other spaces, below, for the rounds you fire in practice.

MY POS refers to your body position, such as Bench, Prone, Sitting and Offhand, which you

may switch from shot-to-shot. CALL means Calling Your Shot, which you place on the tiny

target, and then use a spotting scope to see where you actually hit. (The actual hit is plotted on

the large target on the right -- see below)

TIME -- is entered if this was a timed shot or timed target exposure. Did you make it?

EST/ACT -- Refers to Estimated and Actual Range. When firing on an Unknown Distance

Range, first enter your Range Estimate, then the Actual Distance. On a Known Distance Range,

just enter the Distance.

After each shot, eye your target through a spotting scope and then plot the bullet's impact point

on the LARGE TARGET, (right), using arrows and numerals. Each cross-hatch on this target

represents 9 inches up/down or right/left, but you can use the unit of measurement that best

suits your practice or distance -- just do it consistently. Remember, only ten shots per target,

and per Data Book page.

AFTER YOU FINISH: Jot down the TOTAL RDS (Rounds) FIRED TODAY, and the TOTAL

RDS (Rounds) THIS BARREL, which is determined by adding the rounds fired today to the

TOTAL RDS THIS BARREL from your last practice session. This is how you'll be able to track

any decline in accuracy as the barrel wears. (However, that's not usually an issue until you've

fired 3,000 to 5,000 rounds.)



And finally, there's a space for REMARKS where you enter any conclusions or special

conditions from this practice session. Note any zero shift, or perhaps that you used a different

bipod, a new scope, etc. It's also a good place to decide how best to focus your next practice

session.

Usually at the end of a shooting session, I also cut out my target bulls eyes, then measure and

file the groups in a three-ring binder, with one section for each rifle. This binder, along with my

individual Rifle Data Books, contains all the technical information I need for precision shooting --

and I'm sure you'll find this works well, too.

Happy Shooting!

Documents

Rifle Data Book